Connect two different network windows server 2003 without routing

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How to connect two different client PC and one server with windows 2003 with two nic
One nic IP:192.168.1.2 mask:255.255.255.0 and second network IP:192.168.2.2
Mask:255.255.255.0 now two client PC connect in same (unmanagable switch)

Client 1 IP:192.168.1.3 and second client IP:192.168.2.3 now how to communicate this two client without routing and remote access oprion in windows server 2003
Should I able to ping from client one PC to another PC how?

Yes